Based on the long-running Image Comics series by Kirkman, Tony Moore and Charlie Adlard, The Walking Dead follows a group of people struggling to survive in the wake of an epidemic that’s left the world overrun by zombies. The six-episode first season, which stars Andrew Lincoln, Jon Bernthal, Jeffrey DeMunn, Sarah Wayne Callies, Laurie Holden and Steven Yeun, debuts in October during the network’s annual Fearfest horror marathon.